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WorksheetsLocal Anesthetic Molecule Structure and Function Quiz
Total questions: 14
Worksheet time: 7mins
What is the function of the lipophilic aromatic ring in a local anesthetic molecule?
It increases water solubility
It allows the molecule to penetrate the nerve membrane
It binds to the receptor site
It forms the ionized form in the cartridge
Why is the hydrophilic property of the terminal amine important for anesthetics?
It allows the anesthetic to dissolve in water and interact with nerve cells.
It makes the anesthetic more acidic and less effective.
It prevents the anesthetic from dissolving in water.
It causes the anesthetic to be stored in fat tissue.
Compared to amides, how do esters typically act in terms of duration?
Longer acting
Shorter acting
No difference
Variable acting
Which form of local anesthetic is able to cross the lipid nerve membrane?
The cationic form (LAH+)
The uncharged base (not an ion)
The anionic form (LA-)
The protonated base (LAH-)
Which of the following is a characteristic that affects local anesthetic induction and action?
Blood glucose level
Concentration of local anesthetic
Heart rate
Oxygen saturation
How might increased perineurium thickness affect the action of a local anesthetic?
It would have no effect
It would enhance the speed of anesthetic action
It would slow down the diffusion of the anesthetic
It would change the color of the anesthetic
Which of the following is NOT listed as a characteristic affecting local anesthetic induction and action?
Protein binding
Vasodilator activity
Nonnerve tissue diffusibility
Blood pH
What is the typical pH range for local anesthetic solutions?
1.0 to 2.0
3.0 to more than 6.0
7.0 to 8.0
8.0 to 10.0
Which solution is used in the buffering process to mix with local anesthetic solutions, except for bupivacaine?
Sodium bicarbonate solution
Sodium chloride solution
Potassium iodide solution
Calcium carbonate solution
Which of the following is NOT a mechanism included in the pharmacokinetics of local anesthetic drugs?
Absorption
Distribution
Synthesis
Metabolism
What is the relationship between the concentration of local anesthetics and their effects on the CNS?
Directly proportional
Inversely proportional
No relationship
Randomly proportional
What is a possible effect of an overdose of local anesthetics on the CNS?
CNS stimulation
CNS depression
Increased heart rate
Enhanced memory
At low blood levels, what property might local anesthetics exhibit?
Anticonvulsant properties
Hallucinogenic properties
Stimulant properties
Sedative properties
What role does the vascularity in the area of injection play in the systemic effects of local anesthetics?
It determines the color of the anesthetic
It affects how quickly the drug is absorbed into the bloodstream
It changes the taste of the anesthetic
It has no effect on the drug's action
